Foam-based mass emergency depopulation of floor-reared meat-type poultry operations.
نویسندگان
چکیده
Current control strategies for avian influenza and other highly contagious poultry diseases often include quarantine, depopulation, and disposal of infected birds. For biosecurity reasons, on-farm depopulation and disposal methods are preferred. The options for mass depopulation are limited, as reported by the "2000 Report of the AVMA Panel on Euthanasia." Current depopulation techniques may have excessive labor requirements, are not appropriate for all house types, and may not be suitable for large-scale emergency implementation. A procedure has been developed that uses foam to rapidly form a blanket over the birds. The procedure requires relatively few people, can be performed in a variety of house types, and is compatible with in-house composting. Results from 2 experiments using foam for depopulation are presented in this paper. These studies have shown that foams are comparable to the CO(2) polyethylene tent procedure in time to death in small groups and that the foam is faster as group size increases. Adding CO(2) to the foam does not enhance its efficacy. Based on corticosterone levels, the study also showed that the foams are no more stressful than the CO(2) depopulation method. Necropsy and histological examination of birds indicated that blood was present to some degree in the trachea, syrinx, and bronchial tree in broilers subjected to foam with CO(2), foam without CO(2), and CO(2) polyethylene tent methods of depopulation. Foam caused a rapid onset of airway occlusion. In both foam- and CO(2)-euthanized broilers, lesions are consistent with anoxia or hypoxia. This suggests that foam acts by physically induced hypoxia, whereas CO(2) causes chemically induced hypoxia.
منابع مشابه
Implementing Water-Based Foam Depopulation of Floor Reared Poultry
There are six major steps involved in responding to rapidly spreading poultry disease outbreaks including biosecurity, surveillance, quarantine, mass emergency depopulation, mass carcass disposal, and decontamination. Water-based foam is one of the methods used for mass emergency depopulation during severe disease outbreaks. This project evaluated the logistics of foam depopulation in two exper...
متن کاملUse of water-based foam to depopulate ducks and other species.
Current control strategies for avian influenza virus, exotic Newcastle disease, and other highly virulent poultry diseases often include surveillance, quarantine, depopulation, disposal, and disinfection. On-farm depopulation and disposal methods reduce potential movement of virus and improve biosecurity. Water-based foam depopulation was developed as a potential alternative mass emergency poul...
متن کاملVariations in the digestible lysine requirement of broiler chickens due to sex, performance parameters, rearing environment, and processing yield characteristics.
Four experiments were conducted to evaluate variations in the digestible lysine (DLYS) requirement estimates of broilers due to rearing environment, sex, or growth performance during the starter period (7 to 21 d) and due to sex, growth, and carcass yield characteristics during the grower period (21 to 38 d). In the first 3 experiments, chicks were allocated to either battery or floor pens. The...
متن کاملThe effects of color of lighting on the behavior and production of meat chickens.
Male and female meat chickens were reared for 28 d in blue, green, red, or white light at 30 lx and the effects on tissue growth and bird behavior recorded. Birds reared in red or white light were more active, as expressed by greater walking activity in the white light treatment and by greater floor-pecking, wing-stretching, and aggression in the red light treatment. In these two treatments, gu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Poultry science
دوره 86 2 شماره
صفحات -
تاریخ انتشار 2007